# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2017/nikon_2017-11.agf">NIKON Zemax catalog 2017-11</a> (obtained from <a href="http://www.nikon.com/products/glass/lineup/materials/optical/">http://www.nikon.com</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/hikari_2017-04-01.pdf">HIKARI glass data sheets</a>
COMMENTS: |
    Low	Tg	glass
DATA:
  - type: formula 3
    wavelength_range: 0.4 0.7
    coefficients: 3.12620771 -0.0131941997 2 0.0273755534 -2 0.000644833441 -4 -4.45290808e-06 -6 1.47682971e-06 -8 -5.38318514e-05 4
  - type: tabulated k
    data: |
        0.300 1.0994E-05
        0.310 4.8502E-06
        0.320 2.2091E-06
        0.330 1.2981E-06
        0.340 8.1468E-07
        0.350 4.8561E-07
        0.360 3.0184E-07
        0.370 1.9789E-07
        0.380 1.3291E-07
        0.390 9.7732E-08
        0.400 7.7326E-08
        0.420 6.0709E-08
        0.440 4.9366E-08
        0.460 4.4192E-08
        0.480 3.8389E-08
        0.500 3.5972E-08
        0.550 3.0745E-08
        0.600 3.8351E-08
        0.650 3.6335E-08
        0.700 4.4743E-08
        0.800 5.1134E-08
        0.900 2.1518E-08
        1.000 3.1895E-08
        1.200 9.5541E-09
        1.400 3.3473E-08
        1.600 8.9440E-08
        1.800 2.6018E-07
        2.000 5.3407E-07
        2.200 1.4217E-06
        2.400 5.4943E-06
CONDITIONS:
    temperature: 296
PROPERTIES:
    nd: 1.790628
    Vd: 44.984151
    glass_status: preferred
    density:
      - value: 4680
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.5e-06
    dPgF: -0.0086